The examples in the Native folder are NOT up to date with the correct AppGameKit core files.
If you installed v10816, the windows templates (one for VS Express 2008 and the other for VS Express 2010) work.
If you open up the template appropriate to your VS installation and then one of the examples, you can copy the core AppGameKit file (Core.cpp) from one to the other. Then compare the project properties.
If you are using VS 2010, make sure that the linker paths for both the Debug and Release modes point to the VS2010 directories. The Example projects probably point to the VS 2008 ones.
Cheers,
Ancient Lady
AGK Community Tester and AppGameKit Master